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rwrw lal??ttn i e to 77,472-0711 • Billings, W 801-185-4489 • Caper, WY 853-235.1513 <br />I?11?fiieYrw37ew1liT n 1175 a Rapid City, SD 31B-672-122,5 • College Station, TX 881.61D-221a <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 2/17/11 S25626-S25633 <br />Analyte Count Result Units <br />Method: E300.0 <br />Sample ID: LCS 2 Laboratory Control Sample <br />Chloride 10.1 mg/L <br />Sulfate 40.8 mg/L <br />Sample ID: MBLK 2 Method Blank <br />Chloride ND mg/L <br />Sulfate ND mg/L <br />Sample ID: LFB 2 Laboratory Fortified Blank <br />Chloride 12.2 mg/L <br />Sulfate 49.3 mg/L <br />Sample ID: C11020564-002AMS 2 Sample Matrix Spike <br />Chloride 23.3 mg/L <br />Sulfate 106 mg/L <br />Sample ID: C11020564-002AMSD 2 Sample Matrix Spike Duplicate <br />Chloride 23.7 mg/L <br />Sulfate 107 mg/L <br />Report Date: 03/21/11 <br />Work Order: C11020554 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R143101 <br />Run: IC2-C_110224A 02/24/11 17:13 <br />1.0 101 90 110 <br />1.0 101 90 110 <br />Run: IC2-C 110224A 02/24/11 17:28 <br />3.0 <br />5.0 <br /> Run: IC2-C_110224A 02/24/11 17:59 <br />1.0 98 90 110 <br />1.0 98 90 110 <br /> Run: IC2-C_110224A 02/25/11 17:06 <br />1.0 101 80 120 <br />1.6 100 80 120 <br /> Run: IC2-C_110224A 02/25/11 17:21 <br />1.0 103 80 120 1.7 10 <br />1.6 102 80 120 1.2 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 23 of 39 <br />